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Finding the Fourth Proportional to 86,199.79, 118,928.01 and 52,197.40

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Solution

The fourth proportional to 86,199.79, 118,928.01 and 52,197.40 is: 72,015.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,199.79 : 118,928.01 = 52,197.40 : x
  2. Step 2: Convert to fraction form
    86,199.79/118,928.01 = 52,197.40/x
  3. Step 3: Cross multiply
    86,199.79x = 118,928.01 × 52,197.40
  4. Step 4: Simplify right side
    86,199.79x = 6,207,732,909.17
  5. Step 5: Solve for x
    x = 6,207,732,909.17/86,199.79
  6. Step 6: Final answer
    x = 72,015.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.